Train Smarter.
Race Better.
Data-driven tools to dial in your nutrition, pacing, and race day strategy.
Even Splits Lab is where endurance training meets real numbers. Our articles break down how to train, fuel, and race smarter, with simple calculators to dial in your pacing, nutrition, sweat rate, and heart rate zones. Built for runners, cyclists, and triathletes who want data they can actually use.
The Lab Tools
Fuel Strategy
Running a half marathon? Most athletes need 60–90g of carbs per hour. Find your exact number in 2 minutes.
Plan Fuel
Sweat Rate
Lose more than 1L of fluid per hour without knowing it? Most athletes do. Find your hourly sweat rate in 2 minutes.
Run Test
Pacing Strategy
Want to run a sub-2:00 half? You need to hold 5:41/km. Enter your goal time and find the pace you actually need to hit.
Find Your Pace
HR Zone Finder
Training in Zone 2 but actually running in Zone 3? It happens more than you’d think. Get your personal zones in 2 minutes.
Find Your ZonesLatest From the Lab
Christmas Gifts for Triathletes: Race Day and Off-Season Picks
Buying for a triathlete is like buying for three people at once. There’s a swimmer, a cyclist and a runner in there, and each one has strong opinions about gear. Most of them already own the basics, which makes guessing risky. The good news is that December is off-season for many triathletes, so training gear […]
Garmin Forerunner 265 vs 570: Is the Upgrade Worth It?
The Forerunner 265 is still a good watch. It now has a successor with a nicer screen, a speaker for phone calls and a higher price tag. If you own a 265, you’ve probably wondered whether your wrist is falling behind. If you’re shopping, you’re looking at two watches that look almost identical. Here’s the […]
How to Get Rid of Shin Splints (and Keep Them Gone)
Shin splints are the injury that punishes you for getting fitter. Mine got worse in January, and by the end of February I had to stop a run because the pain kept building. It cost me the half marathon I had signed up for, so I raced the 8 km instead. By June I was […]